CN212028538U

CN212028538U - Non-return self-locking stop valve

Info

Publication number: CN212028538U
Application number: CN202020146527.6U
Authority: CN
Inventors: 刘德鑫
Original assignee: Heilongjiang Beifang Valve Co ltd; Heilongjiang Muling Power Station Valve Co ltd
Current assignee: Heilongjiang Beifang Valve Co ltd; Heilongjiang Muling Power Station Valve Co ltd
Priority date: 2020-01-23
Filing date: 2020-01-23
Publication date: 2020-11-27
Anticipated expiration: 2030-01-23

Abstract

The utility model discloses a non-return self-locking stop valve, belonging to the technical field of stop valves, comprising a valve body, wherein an inlet pipe is arranged at one side of the valve body, an outlet pipe is arranged at the other side of the valve body, an extrusion pad and an anti-impact pad are respectively arranged inside the inlet pipe and the outlet pipe, one side of the anti-impact pad is connected with the extrusion pad, and a plurality of compression springs are arranged inside the extrusion pad; through being provided with the pivot, the connecting rod, a spring, cardboard and draw-in groove, when not needing to rotate the turning handle, because the cardboard card is in the draw-in groove, thereby can prevent that the turning handle from being rotated by the mistake, and then avoid the valve to open by mistake or the mistake is closed, and if there is not artificial pulling connecting rod, the cardboard is hardly followed and is rolled out in the draw-in groove, and then improved the spacing ability to the turning handle, when needs use the turning handle, the user only needs the pulling connecting rod, make the connecting rod rotate along keeping away from the second valve pole direction, the connecting rod rotates and drives the cardboard and rotate, and make the cardboard roll out from the draw-in groove, connecting rod meeting extension spring simultaneously.

Description

Non-return self-locking stop valve

Technical Field

The utility model relates to a stop valve technical field specifically is a non return auto-lock stop valve.

Background

A stop valve, which is the most widely used valve; because the friction force between the sealing surfaces is small in the opening and closing process, the sealing ring is durable, the opening height is small, the manufacturing is easy, the maintenance is convenient, and the sealing ring is not only suitable for medium and low pressure environments, but also suitable for high pressure environments; the closing principle of the stop valve is that the sealing surface of the valve clack is tightly attached to the sealing surface of the valve seat by means of the pressure of the valve rod, and the medium is prevented from flowing.

More so, chinese patent publication No. CN207034290U discloses a non-return self-locking stop valve, which comprises a valve body, a check valve cabin and a stop valve cabin, wherein the two ends of the valve body are respectively an inlet pipe and an outlet pipe, a connection cabin is arranged in the valve body, the check valve cabin is arranged on the connection cabin near the side of the outlet pipe, a check valve clack is arranged at the intersection of the check valve cabin and the connection cabin, a clack guide pillar is arranged on the check valve clack, the clack guide pillar is arranged in a tubular guide sleeve, and the tubular guide sleeve is arranged on the lower.

The technical scheme provides a non-return self-locking stop valve which is provided with a self-locking device and solves the problems of false opening and false closing of the non-return stop valve; however, the clamping piece on the self-locking device can easily slide in the groove on the rotating handle, so that the fastening performance of the clamping piece is reduced, and the rotating handle on the stop valve can be easily opened and closed by mistake; meanwhile, two ends of the stop valve need to be connected with an external connecting pipe, and a gap may exist between the two ends of the stop valve and the connecting pipe, so that the tightness of the valve is reduced, and water flow or gas flow out of the gap is easy to cause.

Disclosure of Invention

An object of the utility model is to provide a non return auto-lock stop valve has solved and has been difficult to carry on spacing fixed and valve and external connection intertube to the changeover handle and have had gapped problem on the current stop valve among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a non-return self-locking stop valve comprises a valve body, wherein an inlet pipe is installed on one side of the valve body, an outlet pipe is installed on the other side of the valve body, an extrusion pad and an anti-impact pad are installed inside the inlet pipe and the outlet pipe respectively, one side of the anti-impact pad is connected with the extrusion pad, a plurality of compression springs are installed inside the extrusion pad, a second valve cover is installed on one side of the top of the valve body, a first valve rod extending into the valve body is installed at the top of the second valve cover, a first valve clack is installed at the bottom end of the first valve rod, a first valve cover is installed on the other side of the top of the valve body, a packing is fixed at the top of the first valve cover, a second valve rod extending into the valve body is installed at the top of the packing, a second valve clack is installed at the bottom end of the second valve rod, a rotating handle, the packing box is characterized in that connecting plates are fixed on two sides of the packing box, the outer surface of each connecting plate is connected with a connecting rod through a rotating shaft, a clamping plate extending to the inside of the clamping groove is fixed at the top end of each connecting rod, a spring is fixed on one side of each connecting rod, and one end of each spring is connected with the packing box.

Preferably, the clamping groove is matched with the clamping plate, and the clamping groove and the clamping plate are both arc-shaped.

Preferably, a plurality of compression springs are equidistantly distributed in the extrusion pad, and the compression springs are made of stainless steel materials.

Preferably, the inner walls of the valve body, the inlet pipe and the outlet pipe are coated with anticorrosive paint.

Preferably, the connecting rod is rotatably connected with the connecting plate through a rotating shaft.

Preferably, the anti-impact pad and the extrusion pad are both made of rubber materials.

Preferably, the inside of the first valve cover is bonded with a sealing gasket by strong glue.

Compared with the prior art, the beneficial effects of the utility model are that: the non-return self-locking stop valve is provided with a rotating shaft, a connecting rod, a spring, a clamping plate and a clamping groove, when the rotating handle is not required to be rotated, the clamping plate is clamped in the clamping groove, so that the rotating handle can be prevented from being rotated by mistake, further avoiding the valve from being opened or closed by mistake, and the clamping plate is difficult to rotate out of the clamping groove if the connecting rod is not pulled by people, thereby improving the limit capability of the rotating handle, when the rotating handle needs to be used, a user only needs to pull the connecting rod to enable the connecting rod to rotate along the direction away from the second valve rod, the connecting rod rotates to drive the clamping plate to rotate, the clamping plate rotates out from the clamping groove, and meanwhile, the connecting rod stretches the spring, then the user can rotate the rotating handle, when the rotating handle needs to be fixed, the user loosens the connecting rod, at the moment, the spring recovers elasticity and resets, the clamping plate is clamped into the clamping groove to fix the rotating handle, the rotating handle can be limited, and the resetting mode is simple and convenient; still be provided with anti dashing simultaneously and fill up, extrusion pad and compression spring, when outside connecting pipe installation inlet pipe or outlet pipe, the extrusion pad atress can take place to deform and extrude compression spring, compression spring atress compression, and anti dashing fills up also can take place to deform the compression, after the connecting pipe is installed, because compression spring's reaction force, can make the extrusion pad hug closely the connecting pipe, thereby make the clearance between connecting pipe and valve reach the minimum, thereby the leakproofness between the valve has been improved, and prevent that air current or rivers from flowing out from the clearance between connecting pipe and valve, and anti dashing fills up and can prevent that rivers from flowing back and striking the extrusion pad, thereby the life of extrusion pad has been improved.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is an enlarged schematic view of the structure of the present invention A;

fig. 3 is an enlarged schematic structural diagram of the present invention B.

In the figure: 1. a valve body; 2. an inlet pipe; 3. a first valve stem; 4. a second valve stem; 5. a first valve flap; 6. a first valve cover; 7. packing; 8. a connecting rod; 9. a handle is rotated; 10. a connecting plate; 11. a rotating shaft; 12. a spring; 13. a second valve flap; 14. an outlet pipe; 15. an anti-impact pad; 16. pressing the cushion; 17. a compression spring; 18. clamping a plate; 19. a card slot; 20. a second valve cover.

Detailed description of the preferred embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," "fixed," "sleeved," and the like are to be construed broadly, e.g., as either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; the two elements may be connected directly or indirectly through an intermediate medium, and the two elements may be connected internally or in an interaction relationship, and a person skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.

Referring to fig. 1-3, the present invention provides a technical solution: a non-return self-locking stop valve comprises a valve body 1, an inlet pipe 2, a first valve rod 3, a second valve rod 4, a first valve clack 5, a first valve cover 6, a packing 7, a connecting rod 8, a rotating handle 9, a connecting plate 10, a rotating shaft 11, a spring 12, a second valve clack 13, an outlet pipe 14, an anti-impact pad 15, an extrusion pad 16, a compression spring 17, a clamping plate 18, a clamping groove 19 and a second valve cover 20, wherein the inlet pipe 2 is installed on one side of the valve body 1, the outlet pipe 14 is installed on the other side of the valve body 1, the extrusion pad 16 and the anti-impact pad 15 are respectively installed inside the inlet pipe 2 and the outlet pipe 14, one side of the anti-impact pad 15 is connected with the extrusion pad 16, a plurality of compression springs 17 are installed inside the extrusion pad 16, the second valve cover 20 is installed on one side of the top of the valve body 1, the first valve rod 3 extending to, first valve gap 6 is installed to the top opposite side of valve body 1, first valve gap 6's top is fixed with packing 7, the top of packing 7 is installed and is extended to the inside second valve stem 4 of valve body 1, second valve section 13 is installed to the bottom of second valve stem 4, turning handle 9 is installed on the top of second valve stem 4, draw-in groove 19 has all been seted up to the both sides of second valve stem 4, the both sides of packing 7 all are fixed with connecting plate 10, the surface of connecting plate 10 is connected with connecting rod 8 through pivot 11, the top of connecting rod 8 is fixed with the cardboard 18 that extends to draw-in groove 19 inside, one side of connecting rod 8 is fixed with spring 12, and spring 12's one end is connected with packing 7, spring 12's effect can make cardboard 18 quick card go into in draw.

Referring to fig. 1-3, the engaging groove 19 is adapted to the engaging plate 18, and the engaging groove 19 and the engaging plate 18 are both arc-shaped, so that the engaging plate 18 is engaged into the engaging groove 19, thereby limiting and fixing the rotating handle 9; a plurality of compression springs 17 equidistance distribute in the inside of extrusion pad 16, and compression springs 17 adopts stainless steel material to make and forms to improve the elastic strength of extrusion pad 16, prevent that extrusion pad 16 from losing elasticity too early.

Referring to fig. 1 to 3, the inner walls of the valve body 1, the inlet pipe 2 and the outlet pipe 14 are coated with anticorrosive paint, so that the anticorrosive performance of the valve body 1, the inlet pipe 2 and the outlet pipe 14 is improved; the connecting rod 8 is rotatably connected with the connecting plate 10 through the rotating shaft 11, so that a user can rotate the clamping plate 18 out of the clamping groove 19 through rotating the connecting rod 8.

Referring to fig. 1-2, the anti-impact pad 15 and the extrusion pad 16 are made of rubber materials to improve the sealing performance between the external connection pipe and the valve body 1 and prevent water or air from flowing out from the gap between the valve body 1 and the connection pipe, and the sealing pad is adhered to the inside of the first valve cover 6 by strong glue to improve the sealing performance and prevent air from being emitted from the first valve cover 6.

The working principle is as follows: firstly, when a worker needs to use the rotating handle 9, the user only needs to pull the connecting rod 8 to enable the connecting rod 8 to rotate in the direction away from the second valve rod 4, the connecting rod 8 rotates to drive the clamping plate 18 to rotate, the clamping plate 18 is enabled to rotate out of the clamping groove 19, meanwhile, the connecting rod 8 stretches the spring 12, then the user can rotate the rotating handle 9, when the rotating handle 9 needs to be fixed, the user loosens the connecting rod 8, and at the moment, the spring 12 recovers elasticity and resets, so that the clamping plate 18 is clamped into the clamping groove 19 again and fixes the rotating handle 9; when the external connecting pipe is required to be installed in the inlet pipe 2 or the outlet pipe 14, the extrusion pad 16 is deformed and extrudes the compression spring 17 under the pressure of the connecting pipe, the compression spring 17 is stressed and compressed, and the anti-impact pad 15 is also deformed and compressed, after the connecting pipe is installed, the extrusion pad 16 can be tightly attached to the connecting pipe due to the reaction force of the compression spring 17, so that the gap between the connecting pipe and the valve is minimized, the sealing performance between the valves is improved, and the anti-impact pad 15 can prevent water flow from flowing back to impact the extrusion pad 16.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a non-return auto-lock stop valve, includes the valve body, its characterized in that: an inlet pipe is installed on one side of the valve body, an outlet pipe is installed on the other side of the valve body, an extrusion pad and an anti-impact pad are installed inside the inlet pipe and the outlet pipe respectively, one side of the anti-impact pad is connected with the extrusion pad, a plurality of compression springs are installed inside the extrusion pad, a second valve cover is installed on one side of the top of the valve body, a first valve rod extending into the valve body is installed on the top of the second valve cover, a first valve clack is installed at the bottom end of the first valve rod, a first valve cover is installed on the other side of the top of the valve body, a packing is fixed at the top of the first valve cover, a second valve rod extending into the valve body is installed at the top of the packing, a second valve clack is installed at the bottom end of the second valve rod, a rotating handle is installed at the top end of the second valve rod, clamping grooves are, the outer surface of the connecting plate is connected with a connecting rod through a rotating shaft, a clamping plate extending to the inside of the clamping groove is fixed at the top end of the connecting rod, a spring is fixed on one side of the connecting rod, and one end of the spring is connected with the packing.

2. The check self-locking stop valve according to claim 1, characterized in that: the clamping groove is matched with the clamping plate, and the clamping groove and the clamping plate are both arc-shaped.

3. The check self-locking stop valve according to claim 1, characterized in that: a plurality of compression spring equidistance distributes in the inside of extrusion pad, just compression spring adopts stainless steel material to make and forms.

4. The check self-locking stop valve according to claim 1, characterized in that: and the inner walls of the valve body, the inlet pipe and the outlet pipe are coated with anticorrosive paint.

5. The check self-locking stop valve according to claim 1, characterized in that: the connecting rod is rotatably connected with the connecting plate through a rotating shaft.

6. The check self-locking stop valve according to claim 1, characterized in that: the anti-impact pad and the extrusion pad are both made of rubber materials.

7. The check self-locking stop valve according to claim 1, characterized in that: and a sealing gasket is bonded in the first valve cover through strong glue.